Senior Fullstack Ruby on Rails Developer

The Role

We are looking for a Senior Fullstack Ruby on Rails Developer to join one of our high-growth client teams. In this role, you will be a key driver of the application's lifecycle, writing clean, idiomatic Ruby code to build robust backend features while ensuring a smooth, highly interactive frontend user experience.

You will help the client leverage the "Rails way" to ship features quickly, without sacrificing long-term maintainability, testability, or performance. This is an ideal position for a developer who appreciates the elegant architecture of Rails but understands how to optimize database queries, scale background workers, and deliver a modern interface.

What we are looking for

• 5+ years of production experience building and scaling applications using Ruby on Rails (Rails 6/7) and modern Ruby 3.x features.

• Strong proficiency with frontend assets in Rails. This includes deep experience with Hotwire (Turbo/Stimulus) OR modern SPA frameworks like React.js or Vue.js connected via a Rails API.

• Deep knowledge of PostgreSQL or MySQL, specifically in writing complex ActiveRecord queries, optimizing indexes, and managing database migrations safely at scale.

• Extensive experience managing background jobs, race conditions, and heavy data processing using Sidekiq and Redis.

• A strict habit of writing maintainable test suites using RSpec, Capybara, or FactoryBot to ensure high test coverage and stable deployments.

• Proven track record of designing, securing, and documenting clean RESTful APIs.

• Solid understanding of Git workflows, Docker containerization, and asset compilation pipelines (Propshaft, Webpacker, or Vite Ruby).

Nice-to-Have

• Experience migrating legacy Rails applications to newer versions.

• Familiarity with cloud platforms (AWS, Heroku, or Render) and CI/CD pipelines.

• Understanding of domain-driven patterns within Rails to keep large codebases decoupled.

• Knowledge of web security best practices (OWASP Top 10, cross-site scripting prevention).

Responsibilities

• Design, architect, and implement clean, test-driven features across both the backend and frontend layers.

• Profile and optimize slow queries, eliminate N+1 query bugs, and optimize frontend rendering paths to keep application response times low.

• Participate in rigorous peer code reviews, championing idiomatic Ruby patterns, security protocols, and robust architectural choices.

• Act as a technical sounding board for Product and Design teams, helping evaluate the technical feasibility of upcoming features.

• Assist in maintaining and improving deployment workflows to ensure reliable, zero-downtime releases.

What we offer

Get paid, not played

No more unreliable clients. Enjoy on-time monthly payments with flexible withdrawal options.

Predictable project hours

Enjoy a harmonious work-life balance with consistent 8-hour working days with clients.

Flex days, so you can recharge

Enjoy up to 24 flex days off per year without losing pay, for full-time positions found through Proxify.

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Hand-picked opportunities just for you

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One seamless process, multiple opportunities

A one-time contracting process for endless opportunities, with no extra assessments.

Compensation

Enjoy the same pay, every month with positions landed through Proxify.